YAOGAN-31 K, 47854
Orbit data source: Space-Track
YAOGAN-31 K, 47854 is a payload satellite owned by PLA SSF (CN) in LEO that was launched on Sat, 13 Mar 2021 UTC via a CHANG ZHENG 4C launch vehicle from the Jiuquan Satellite Launch Center, China (JSC). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.
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47854 intel report (Beta)
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Identifier
Orbit
Country
CN / PRCRelated business
Manufacturer
DFH
Mission
Operational Defense Sigint
Bus & Motor
JB-8B, Unknown motor
Mass
~500 kg wet, ~500 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 0.5 m
Radar Cross Section
0.446 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 21 hours ago
TLE from 21 hours ago
0 YAOGAN-31 K
1 47854U 21020A 26172.54463652 -.00000021 00000-0 10682-3 0 9990
2 47854 63.4050 246.7964 0175342 0.4552 359.6603 13.45447974259055Epoch: 2026-06-21T13:04Z
TLE epoch observation values (Epoch: 2026-06-21T13:04:16.595Z)
Latitude
0.00002°
Longitude
140.98388°
Altitude
959.879 km
Speed
7.437 km/s
True Right ascension
16h 27m 11s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
21:31:20
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,218.793 km
Perigee altitude
956.971 km
Semi-major axis
7,466.019 km
Eccentricity
0.01753
Inclination
63.405°
RAAN
246.7964°
Arg. of periapsis
0.4552°
True anomaly
359.64812°
Mean anomaly
359.6603°
Eccentric anomaly
359.65424°
Mean motion
3.36441 °/min
Orbital period
107 mins
BSTAR
0.00010682
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Other satellites on launch #20 in the year 2021 (2021-03-13 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.YAOGAN-31 K Visibility forecast
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Span | Click to sort rows by Start time (UTC) header in descending order | Start Az. | Max El. time (UTC) | Max El. Az. | Max El. | End time (UTC) | End Az. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-06-22 12:44:19.448Z | 355.451° N | 2026-06-22 12:47:19.448Z | 21.657° NNE | 14.107° | 2026-06-22 12:51:19.448Z | 55.843° ENE |
| 12 mins | 2026-06-22 14:34:19.448Z | 339.09° N | 2026-06-22 14:40:19.448Z | 52.098° ENE | 35.782° | 2026-06-22 14:46:19.448Z | 117.196° SE |
| 12 mins | 2026-06-22 16:25:19.448Z | 307.556° NW | 2026-06-22 16:30:19.448Z | 253.227° W | 33.332° | 2026-06-22 16:37:19.448Z | 179.885° S |
| 11 mins | 2026-06-23 06:13:19.448Z | 195.623° SSW | 2026-06-23 06:18:19.448Z | 121.354° SE | 41.574° | 2026-06-23 06:24:19.448Z | 40.797° NE |
| 9 mins | 2026-06-23 08:05:19.448Z | 270.22° WNW | 2026-06-23 08:09:19.448Z | 318.923° NNW | 25.5° | 2026-06-23 08:14:19.448Z | 14.052° NNE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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